WebアプリケーションのJavaスクリプトに存在する関数を呼び出す

Question

WebページのJavaスクリプトに存在する関数をandroid appに呼び出す方法。この関数によって返された結果をandroid app内に表示します。

たとえば、getTalukas関数はStringsのリストを返します。アンドロイドアプリに表示します。

<script type="text/javascript"> 
//<![CDATA[ 
var PageMethods = function() { 
PageMethods.initializeBase(this); 
this._timeout = 0; 
this._userContext = null; 
this._succeeded = null; 
this._failed = null; 
} 
PageMethods.prototype = { 
_get_path:function() { 
var p = this.get_path(); 
if (p) return p; 
else return PageMethods._staticInstance.get_path();}, 
getTalukas:function(id,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getTalukas',false,{id:id},succeededCallback,failedCallback,userContext); }, 
getVillages:function(did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getVillages',false,{did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
getKnos:function(ptxt,vid,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getKnos',false,{ptxt:ptxt,vid:vid,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
getSnos:function(ptxt,vid,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getSnos',false,{ptxt:ptxt,vid:vid,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
getKnames:function(ptxt,vid,opt,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getKnames',false,{ptxt:ptxt,vid:vid,opt:opt,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
getSnames:function(ptxt,vid,opt,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getSnames',false,{ptxt:ptxt,vid:vid,opt:opt,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
call8a:function(kno,vid,dn,tn,vn,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'call8a',false,{kno:kno,vid:vid,dn:dn,tn:tn,vn:vn,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
call712:function(sno,vid,dn,tn,vn,tc,dc,did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'call712',false,{sno:sno,vid:vid,dn:dn,tn:tn,vn:vn,tc:tc,dc:dc,did:did,tid:tid},succeededCallback,failedCallback,userContext); }, 
getCTSOs:function(id,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getCTSOs',false,{id:id},succeededCallback,failedCallback,userContext); }, 
getCTSOLink:function(did,tid,succeededCallback, failedCallback, userContext) { 
return this._invoke(this._get_path(), 'getCTSOLink',false,{did:did,tid:tid},succeededCallback,failedCallback,userContext); }} 
PageMethods.registerClass('PageMethods',Sys.Net.WebServiceProxy); 
PageMethods._staticInstance = new PageMethods(); 
PageMethods.set_path = function(value) { PageMethods._staticInstance.set_path(value); } 
PageMethods.get_path = function() { return PageMethods._staticInstance.get_path(); } 
PageMethods.set_timeout = function(value) { PageMethods._staticInstance.set_timeout(value); } 
PageMethods.get_timeout = function() { return PageMethods._staticInstance.get_timeout(); } 
PageMethods.set_defaultUserContext = function(value) { PageMethods._staticInstance.set_defaultUserContext(value); } 
PageMethods.get_defaultUserContext = function() { return PageMethods._staticInstance.get_defaultUserContext(); } 
PageMethods.set_defaultSucceededCallback = function(value) { PageMethods._staticInstance.set_defaultSucceededCallback(value); } 
PageMethods.get_defaultSucceededCallback = function() { return PageMethods._staticInstance.get_defaultSucceededCallback(); } 
PageMethods.set_defaultFailedCallback = function(value) { PageMethods._staticInstance.set_defaultFailedCallback(value); } 
PageMethods.get_defaultFailedCallback = function() { return PageMethods._staticInstance.get_defaultFailedCallback(); } 
PageMethods.set_enableJsonp = function(value) { PageMethods._staticInstance.set_enableJsonp(value); } 
PageMethods.get_enableJsonp = function() { return PageMethods._staticInstance.get_enableJsonp(); } 
PageMethods.set_jsonpCallbackParameter = function(value) { PageMethods._staticInstance.set_jsonpCallbackParameter(value); } 
PageMethods.get_jsonpCallbackParameter = function() { return PageMethods._staticInstance.get_jsonpCallbackParameter(); } 
PageMethods.set_path("Home.aspx"); 
PageMethods.getTalukas= function(id,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getTalukas(id,onSuccess,onFailed,userContext); } 
PageMethods.getVillages= function(did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getVillages(did,tid,onSuccess,onFailed,userContext); } 
PageMethods.getKnos= function(ptxt,vid,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getKnos(ptxt,vid,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.getSnos= function(ptxt,vid,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getSnos(ptxt,vid,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.getKnames= function(ptxt,vid,opt,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getKnames(ptxt,vid,opt,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.getSnames= function(ptxt,vid,opt,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getSnames(ptxt,vid,opt,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.call8a= function(kno,vid,dn,tn,vn,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.call8a(kno,vid,dn,tn,vn,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.call712= function(sno,vid,dn,tn,vn,tc,dc,did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.call712(sno,vid,dn,tn,vn,tc,dc,did,tid,onSuccess,onFailed,userContext); } 
PageMethods.getCTSOs= function(id,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getCTSOs(id,onSuccess,onFailed,userContext); } 
PageMethods.getCTSOLink= function(did,tid,onSuccess,onFailed,userContext) {PageMethods._staticInstance.getCTSOLink(did,tid,onSuccess,onFailed,userContext); } 
//]]> 
</script> 

Answer 1

いかがhttp requestアプリからページ とページリターンjsonへ。もう一つのオプションは、JavaScriptから呼び出すことができますアプリ内で関数を作成することができるということです

Answer 2

（注意：これには注意してくださいまたはあなたはセキュリティ上の問題を作成することができます）、以下の

例はhttps://developer.android.com/guide/webapps/webview.html

から取られます

キーパーツ：

public class WebAppInterface { 
    Context mContext; 

    /** Instantiate the interface and set the context */ 
    WebAppInterface(Context c) { 
     mContext = c; 
    } 

    /** Show a toast from the web page */ 
    @JavascriptInterface 
    public void showToast(String toast) { 
     Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show(); 
    } 
} 

主なプログラム：

WebView webView = (WebView) findViewById(R.id.webview); 
webView.addJavascriptInterface(new WebAppInterface(this), "Android"); 

HTMLページ：

<input type="button" value="Say hello" onClick="showAndroidToast('Hello Android!')" /> 

<script type="text/javascript"> 
    function showAndroidToast(toast) { 
     Android.showToast(toast); 
    } 

Answer 3

にはJavaScriptブリッジは、あなたが探しているものであるのWebビューかもしれません！これはJSBridgeを使用するか、JSブリッジを独自に実装することができます。